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About this product

L’Oréal Professionnel Keratin Alpha Sleek Shampoo

The L’Oréal Professionnel Keratin Alpha Sleek Shampoo is a professional, sulfate-free shampoo that intensively smooths, strengthens and hydrates the hair. The formula is enriched with Keratin-Alpha Shaper and amino acid chains, which work together to restructure the hair fiber and strengthen the natural keratin in the hair.

The luxurious, ultra-creamy texture cleanses the hair gently but effectively, while controlling frizz and volume. The hair feels softer immediately, gains a beautiful shine and is easier to manage. Suitable for all hair types, including colored and chemically treated hair.

When using the full Keratin Alpha Sleek routine, the hair remains smooth, frizz-free and controlled for up to 2 weeks.

Contents

  • L’Oréal Professionnel Keratin Alpha Sleek Shampoo 300 ml

  • L’Oréal Professionnel Keratin Alpha Sleek Shampoo 500 ml

  • L’Oréal Professionnel Keratin Alpha Sleek Shampoo 1500 ml

Key features

  • Professional sulfate-free shampoo*

  • With Keratin-Alpha Shaper and amino acid chains

  • Restructures and strengthens the hair

  • Smooths and makes the hair easier to manage

  • Hydrates and softens without weighing it down

  • Instant shine

  • Controls frizz and volume

  • Suitable for all hair types

  • Free from sulfates*, alcohol and artificial colorants

Results & benefits

  • Smooth, frizz-free and controlled hair for up to 2 weeks*

  • Restructures the hair fiber and strengthens keratin

  • Makes the hair soft and intensely hydrated**

  • Provides instant, visible shine***

  • Effectively controls frizz and volume**

* Instrumental test after 4 applications of Shampoo + Smooth Transformer + Serum
** Instrumental test with the full routine
*** Instrumental test with shampoo only

How it works

The Keratin-Alpha technology works deep within the hair fiber to repair damaged keratin bonds and smooth the hair surface. This makes the hair stronger, more supple and better protected against frizz and unwanted volume.

How to use

Apply the shampoo evenly to wet hair. Massage in until a rich lather forms and rinse thoroughly.
In case of contact with the eyes, rinse immediately and thoroughly.

For a long-lasting smooth result for up to 2 weeks:

  • Use the Keratin Alpha Sleek Smooth Transformer once a week

  • On other wash days, use a professional mask from the same range

Specifications

  • Hair type: All hair types

  • Result: Smooth, shiny and frizz-free hair

  • Formula: Sulfate-free*, alcohol-free, without artificial colorants

  • Use: Daily or as needed

  • Contents: 300 ml, 500 ml and 1500 ml

Specifications
Brand
L'Oreal Professionnel
Specifications
Shampoo
Variant
300ml
SKU
3474637335748
EAN
3474637335748

L'Oreal Keratin Alpha Sleek Shampoo

The L’Oréal Professionnel Keratin Alpha Sleek Shampoo is a professional, sulfate-free shampoo that intensively smooths, strengthens, and hydrates the hair.
Sulfate-free
€23,05 Regular price €30,00 You save €6,95
Variant3 variants
Variant
In stock · Order before 4 PM, delivered tomorrow
€50,00 to go for free shipping €0,00 / €50,00
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Have a question about this product?

Our specialists use these products themselves. Ask your question, we will answer within an hour.

Common question Can I use this product on its own?Yes. A shampoo or mask also works on its own; you’ll see results faster when used in combination.

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    Reviews

    I waited more effect

    I waited more effect.

    Olha Prykhodko· 2026-05-30
    Heel goede producten!! Ik wil niks anders

    Heel goede producten!! Ik wil niks anders meer

    Mireille vanbockrijck· 2026-05-18
    sorry mijn haar staat nog alle kanten op en pluist en ziet er niet goed uit

    sorry mijn haar staat nog alle kanten op en pluist en ziet er niet goed uit.. Met de vorige shampoo golden is het stukken beter.

    Marie De Brouwer· 2026-03-16

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